In each one of the examples above, sex is conflated with drinking alcohol through a depiction of a drinking vessel. This conflation became more explicit in the last century with depictions of females inside alcohol drinking vessels.
38Woman in a Glass39
59...the minature busty brunette in black stockings who often cavorts around and inside a champagne glass on the 60 page. 61type62i63contents64type65b66contents67type68text69contents70This synecdochical fetish